15 Most Controversial MLB Stars Then & Now

Jose Canseco

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Getty Images Interestingly enough, Jose Canseco might be far more disliked among his baseball peers than he is by the fans. Sure, he’s an admitted cheater, professing to have used anabolic steroids during his playing days (which shouldn’t come as a surprise to anyone). But, he outed five of the biggest names in baseball — Mark McGwire, Rafael Palmeiro, Jason Giambi, Iván Rodríguez and Juan González — as fellow steroid users, in his tell-all book, “Juiced: Wild Times, Rampant ‘Roids, Smash Hits & How Baseball Got Big.”